Biochemical Engineering - Fermentation Reactors

Exercise : Fermentation Reactors - Section 1
1.
Yield coefficient represents
total biomass or product produced
conversion efficiency of a substrate into product
conversion rate of a substrate into biomass or product
production time of biomass or product
Answer: Option
Explanation:
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2.
The lowest biomass yield in a culture of Escherichia coli will be in
an aerated batch culture containing a initial high concentration of glucose
an aerated batch reactor containing an initial low concentration of glucose
an aerated fed-batch reactor having a low glucose concentration
an aerated continuous reactor having a low glucose concentration
Answer: Option
Explanation:
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3.
When two populations compete for a single growth limiting substrate in a continuous fermenter, which organism would not be washed out?
Organism maintaining the highest substrate concentration
Organism maintaining the lowest substrate concentration
Both (a) and (b)
Organism maintaining the moderate substrate concentration
Answer: Option
Explanation:
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4.
The continuous cultures are not widely used in industry because
they are not suited for the production of secondary metabolites
contamination or mutation can have a disastrous effect on the operation
the government will not approve the licensing of pharmaceuticals produced in continuous cultures
all of the above
Answer: Option
Explanation:
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5.
The lowest yield of ATP /is in
fermentation
aerobic respiration
anaerobic respiration
same in (a), (b) and (c)
Answer: Option
Explanation:
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